Bones/Muscles & Biomechanical Principle 11HMS

Which muscles are primarily responsible for keeping a swimmer in a streamlined position?

• Latissimus dorsi and pectorals

• Rectus abdominus and biceps

• Rectus abdominus and quadriceps

• Latissimus dorsi and rectus abdominus

Which of the following is an example of internal force?

• Tackle in rugby

• Hitting a tennis ball

• Performing a sit-up

• Receiving a pass in basketball

Which of the following is an example of a synovial joint that allows flexion and extension?

• Skull

• Ball and socket joint

• Hinge Joint

• Pivot Joint

During a bicep curl, which muscle acts as the agonist during the upward (concentric) phase?

• Triceps brachii

• Biceps brachii

• Deltoid

• Latissimus dorsi

Which muscle fibre type is best suited for long-distance endurance running?

• Type IIa fast twitch

• Type IIb fast twitch

• Type I slow twitch

• Mixed fibre type

What type of muscle contraction occurs when a muscle produces force but does not change in length?

• Isotonic concentric

• Isotonic eccentric

• Isometric

• Dynamic

When performing a squat, what is the primary role of the gluteus maximus during the upward phase?

• Agonist

• Antagonist

• Stabiliser

• Synergist

Which biomechanical principle helps explain why a wider base improves balance when lifting heavy objects?

• Motion

• Force

• Fluid Mechanics

• Stability

A gymnast holds a handstand for five seconds. This movement best demonstrates which type of muscle contraction?

• Isotonic eccentric

• Isotonic concentric

• Isometric

• Plyometric

Which of the following best represents the relationship between the quadriceps and hamstrings during a leg extension?

• Both act as stabilisers

• Both are agonists

• Quadriceps = agonist, hamstrings = antagonist

• Quadriceps = antagonist, hamstrings = agonist